Chain saw



G. ARSNEAU y 2,060,547

Nov. 5.6,

CHAIN sAw Original Filed Nov'. l5, 1933 INVNToR.4

Patented Nov. 10, 1936 PATENT. OFFICE 2,000,547 CHAIN sAw George Arsneau, Los Angeles, Calif., assignor, by mesne assignments, to Dow Power Saw Company, a corporation oi' California Original application November 15, 1933, Serial 3 Claims.

said links being so formed and interconnected as to provide a very narrow and highly flexible saw, the sections of which are securely xed against accidental separation at their points of pivotal connection.

Further of the objects and advantages of my invention will be apparent upon reading the following specication. v

One form which the invention may assume is exemplified in the following description and illustrated by way of example in the accompanying drawing, in which: I

Fig. l is a view partly in vertical section and partly in elevation of a saw embodying my invention. A

Fig. 2 is a view in elevation showing on an enlarged scale a section of the chain saw.

Fig. 3 is a section on line lII-III of Fig. 2.

Referring more particularly,y to the drawing, Fig. 1 shows a saw generally indicated at D which is supported by sprockets 2|) and 2|, the latter oi.' which is driven by the shaft 22 in the manner described in my copending application above referred to.

The chain saw D employed herein is essentially Vcharacterized by links 6l and 65, the former consisting of substantiallysimilar long-length plates 40 66 and 6l, each having a cutting tooth 66, and interposed between said plates 66 and 61 is a short length plate 69. The sprocket teeth Ill oi' the chain are formed on said plates 69 and, as shown, the teeth 66 of the respectiveplates 66 and 61 are laterally spaced apart from eachother for a distance equal to the thickness of the plate G9, and said teeth are staggered relatively to each other. Rivets 10 pass through the plates 66, 61

and 69. The links 65 are each formed of. outer short length plates 66a, 61a, and an intermediate longlength plate 12a, so that the extremities of the latter ,will extend an appreciable distance beyond the adjacent ends of the plates 66a and 61a. On

t reference to Figure 3 of the drawing, it will be y edges of the aforestated plates 66 and 61 and 66a No. 698,186. Divided and this application January 30, 1934, Serial No. -708,982

- appear presently.

The plates 66a, 61a and 12a of the links 65 are securely riveted together at 12b in a manner like that employed for securing together the plates 66,

61 and 69 of the links 64. I hinge the links 64 to 10 the links 65 by hinge pintles 1I. These pintles are each formed with an intermediate cylindrical portion 14 and reduced oppositely extending cylindrical portions 14a. The portions 14 are set into bearing passages 14h in the extremities of the plates 12a of the links 6 5, and the reduced portions 14a are extended into alined apertures 14e in the extremities of the long plates`66 and 61 of the companion linksd. It is intended that the hinges thus formed shall be very flexible, and 20 With this end in view, the width of the peripheral face of each pintle portion 14 is suiilciently in excess of the thickness oi. the plate 12a into which it is set as to provide such clearance between the inner faces of the extremities of the plates 66 25 and 61 and the opposite iiat faces of the extremities of the plates 12a, whereby to avoid as well as 4 possible undue frictional engagement of these faces with each other. Now by mitering the and 61a, the extreme ends of these plates are con fined against relative lateral movement, so as to prevent the reduced ends of the hinge pintles from leaving their apertures 14e. The construc- 35 tion oi' the chain isy also such that it is of uniform .thickness throughout and smooth faced'at its respective sides; The knuckle joint construction of the hinges and the perfectly flush disposition of the outer ends of the pintles relatively to the said o opposite sides of the chain, enable me to avoid the production of surface obstructions that would offer resistance to theintended high speed movement of the saw.

As shown, the intermediate plates 12a of the 45A links 65 are formed to provide the sprocket teeth Illa and these plates are also formed to provide drag or cleaner teeth 15, the latter occupying positions in line longitudinally with the spaces between the mating cutting teeth 66 of the links 64. 50 The respective: cutting teeth 68 are V-shaped, sharpened along their edges 16, and same are ared laterally from each other or alternately set, as is common practice in crosscut saws, so that the eifective cutting edge of the saw will produce 5| the saw progresses through the Work.

While I have shown and described my invention more or less specifically, it is tobe understood that various changes may be resorted to in the arrangement and construction of its several parts within the spirit of the appended claims.

Having thus described my invention, what I claim and desire to secure by Letters Patent is:

1. A chain saw characterized by cutter tooth links and connecting cleaner tooth links, each link comprising companion outer plates and a plate interposed therebetween, hinge pintles supported by the interposed plates of the cleaner tooth links and having cylindrical end portions operatively set into the outer plate of the cutter tooth links, the edges of the outer plates of the cutter tooth links and the corresponding edges ofthe outer plates of the cleaner tooth links having complementary oppositely beveled faces overlapping each other, and means for securing all plates of each link together so as to maintain the aforestated order of relationship of said complementary beveled faces.

2. A chain saw characterized by cutter tooth links and connecting cleaner tooth links, each .link comprising companion outer plates and a lapping each other, and means for securing all plates of each link together so as to maintain the aforestated order of relationship of said complementary beveled faces, the outer plates of the cutter tooth links respectively formed with cut- -ported by the interposed plates of the cleaner tooth links and having cylindrical end portions operatively set into the outer plate of the cutter tooth links, the edges of the outer plates of the cutter tooth links and the corresponding edges of ythe outer'plates of the cleaner tooth links having 'complementary oppositely beveled faces overlapping each other, means for securing all plates of each link together so as to maintain the afore- 1 statedorder of relationship of said complementary beveled faces, the outer plates of the cutter tooth links respectively vformed with cutting teeth disposed respectively in different positions and spaced apart from each other, the interposed plates of the cleaner tooth links each having a cleaner tooth positioned in longitudinal alinement with the spaces between the cutting teeth of the aforestated cutter links, and a sprocket tooth formed in each interposed plate of each of the cutter and cleaner tooth links. 4.

GEORGE ARSNEAU. 

